Abstract
IN March 1953, during a survey of the background radiation at 250 Mc./s. with the Ohio State radio telescope1,2, a low-intensity source was observed near R.A. 13h. extending at least from Dec. − 15° to + 15°. Further measurements indicate that the maximum or ridge line of this source extends along the dashed curve shown in the accompanying figure. Near Dec. + 15° the ridge becomes double. The solid contours in the figure show the measured variation in background intensity at 250 Mc./s. Galactic co-ordinates are superposed on the figure, with celestial co-ordinates (1950.0) indicated along the edges.
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References
Kraus, J. D., Sky and Telescope, 12, 157 (1953).
Kraus, J. D., and Ksiazek, E., Electronics, 26, 148 (1953).
de Vaucouleurs, G., Astro. J., 58, 30 (1953).
Neyman, J., Scott, E. L., and Shane, C. D., Astrophys. J., 117, 110 (1953).
Bolton, J. G., and Westfold, K. C., Aust. J. Sci. Res., 3, 19 (1950).
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KRAUS, J., KO, H. Radio Radiation from the Supergalaxy. Nature 172, 538–539 (1953). https://doi.org/10.1038/172538b0
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DOI: https://doi.org/10.1038/172538b0
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